Monthly Humidity Averages for Utah

The humidity averages for each month are listed below for Salt Lake City, Utah. The tables give the daily averages along with highest and lowest relative humidity levels.

Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold.

All the numbers here are averages for the years 1961 to 1990.

Average Humidity

In this table, the Daily number for the month or year is the average of humidity readings taken every three hours throughout the day. Morning percentages are for 8 am and Afternoon measures are for 5 pm local standard time.

Average relative humidity (%) for Salt Lake City, Utah

Daily

Morning

Afternoon

74

January

78

69

70

February

77

59

60

March

68

47

53

April

58

39

49

May

51

33

41

June

44

26

36

July

39

22

39

August

44

23

46

September

52

29

56

October

64

41

66

November

74

58

74

December

79

71

55

Annual

61

43

Highest and Lowest Humidity

Below are the monthly and yearly averages for maximum and minimum humidity levels in Utah. The hours when a month's highest and lowest humidity readings usually occur are given in local standard time.